Power shovel



Dec.27, 1927.

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w. w. sLoANE POWER SHOVEL Filed 0G17. 29, 1925 19 Sheets-Sheet 19 Patented Dec. 27, .1927.

UNITED STATES PATENT. OFFICE.

WILLIAM W. SLOANE, OF CHICAGO, ILLINOIS, ASSIGNOR TO GOODMAN MANUFACTUR- POWER sHovEI..

Application led October 29, 1925. Serial No. 65,549.

This invention relates to power shovels for use in confined spaces such as in mines a1- though not limited to this use alone, the general objects thereof residing in the provision of a new and improved power shovel with a view toward high production, convenience and ease ot manipulation and control, compactness, and general all around etciency, particularly with relation toward use 1n con- 1U fined spaces as aforesaid.

Referring to the drawings:

Figure 1 is a side elevation of a power shovel embodying one form or' my invenlion;

l5 Figure 2 is a plan view with parts omitted of the device illustrated in Figure 1;

Figure 3 is an enlarged vertical sectional view through the central part of the machine;

Figure 4 is a horizontal sectional view through the central part of the machine;

Figure 5 is an enlarged partial section on the line 55 ot' Figure 4;

Figure 6 is a rear elevation of' the ma- 25 chine with parts broken away and m section and with parts omitted;

Figure 7 is an enlarged partial section on the line 7--7 of Figure 3;

Figure 8 is an enlarged partial sectional 3U View on the line 8 8 of Figure 3;

Figure 9 is an enlarged sectional view taken on the line 9*-9 of Figure 3 with parts broken away;

Figure 10 is a sectional view taken on the line 10-10 of Figure 9;

Figure 11 is an enlarged longitudinally condensed horizontal section of the beam and scoop structure with parts omitted;

Figure 12 is an enlarged partial sectional View taken on the line 12-12 of Figure 2;

Figure 13 is a sectional view taken on the line 13-13 of Figure 12 with parts broken away;

Figure 14 is a longitudinally condensed 45 side elevation of the beam, elevating arm,

and related parts with portions thereof broken away;

Figure 15 an enlarged section taken on (he line 15-15 of .Figure 14;;

M Figure 16 is an enlarged partial side view of the beam, lated parts;

Figure 17 is an enlarged plan view of the platform valves with parts broken away;

Figure 18 is a side elevation of the plat- 55 form valves with parts removed and in secion;

Figure 19 is a similar side elevation of the platform valves with parts broken away at other points;

Figure 20 is an enlarged partial section taken on the line 20--20 of Figure 6;

Figure 21 is a section taken on the line 21-21 of Figure 20; and

Figures 22, 23, 24, 25 and 26 are dia- 65 grammatic views ot' the fluid pressure system showing various paths of the Huid during various positions of the control valves thereof.

Like numerals refer to like parts throughout the several figures.

Referring to the drawings 1 designates a base Vframe which is carried on laterally spaced continuous tread mechanisms 2 of usual construction which are adapted for the propulsion of the shovel.

Mounted centrally upon the base frame 1 is a vertically disposed cylinder 3 containing a piston 4, arranged so that the piston may elevating arm and certain rebe raised by Huid pressure to engage a fixed part, such as a roof, thus forming a holding jack for the machine while it is in operation.

A turntable or rotatable frame 5 is carried by the base 1 for movement axially about the vertically disposed cylinder 8, as best shown in Figure 3, and this turntable carries the major portion of the operating mechanism.

An electric motor 6 and a fluid pressure pump 7 are mounted on the turntable and are disposed in horizontal longitudinal arrangement along one side thereof. A reduction gear transmission mechanism 8, including a counter shaft 9, operably connects the adjacent ends of the shafts of the motor and pump. See Figures 1, Qand 4. Carriad 'tor independent rotation on the counter shaft` 9 is a pair of opposing bevel gears 10, and these gears oppositely mesh with a revoluble bevel gear 11 carried with the turntable 5, and this bevel gear is operably con- 

